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-- Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
--
-- This program is free software; you can redistribute it and/or modify
-- it under the terms of the GNU General Public License as published by
-- the Free Software Foundation; version 2 of the License.
--
-- This program is distributed in the hope that it will be useful,
-- but WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU General Public License for more details.
--
-- You should have received a copy of the GNU General Public License
-- along with this program; if not, write to the Free Software
-- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
--
-- View: schema_table_statistics
--
-- Statistics around tables.
--
-- Ordered by the total wait time descending - top tables are most contended.
--
-- mysql> SELECT * FROM schema_table_statistics\G
-- *************************** 1. row ***************************
-- table_schema: sys
-- table_name: sys_config
-- total_latency: 0 ps
-- rows_fetched: 0
-- fetch_latency: 0 ps
-- rows_inserted: 0
-- insert_latency: 0 ps
-- rows_updated: 0
-- update_latency: 0 ps
-- rows_deleted: 0
-- delete_latency: 0 ps
-- io_read_requests: 8
-- io_read: 2.28 KiB
-- io_read_latency: 727.32 us
-- io_write_requests: 0
-- io_write: 0 bytes
-- io_write_latency: 0 ps
-- io_misc_requests: 10
-- io_misc_latency: 126.88 us
--
CREATE OR REPLACE
ALGORITHM = TEMPTABLE
DEFINER = 'mariadb.sys'@'localhost'
SQL SECURITY INVOKER
VIEW schema_table_statistics (
table_schema,
table_name,
total_latency,
rows_fetched,
fetch_latency,
rows_inserted,
insert_latency,
rows_updated,
update_latency,
rows_deleted,
delete_latency,
io_read_requests,
io_read,
io_read_latency,
io_write_requests,
io_write,
io_write_latency,
io_misc_requests,
io_misc_latency
) AS
SELECT pst.object_schema AS table_schema,
pst.object_name AS table_name,
sys.format_time(pst.sum_timer_wait) AS total_latency,
pst.count_fetch AS rows_fetched,
sys.format_time(pst.sum_timer_fetch) AS fetch_latency,
pst.count_insert AS rows_inserted,
sys.format_time(pst.sum_timer_insert) AS insert_latency,
pst.count_update AS rows_updated,
sys.format_time(pst.sum_timer_update) AS update_latency,
pst.count_delete AS rows_deleted,
sys.format_time(pst.sum_timer_delete) AS delete_latency,
fsbi.count_read AS io_read_requests,
sys.format_bytes(fsbi.sum_number_of_bytes_read) AS io_read,
sys.format_time(fsbi.sum_timer_read) AS io_read_latency,
fsbi.count_write AS io_write_requests,
sys.format_bytes(fsbi.sum_number_of_bytes_write) AS io_write,
sys.format_time(fsbi.sum_timer_write) AS io_write_latency,
fsbi.count_misc AS io_misc_requests,
sys.format_time(fsbi.sum_timer_misc) AS io_misc_latency
FROM performance_schema.table_io_waits_summary_by_table AS pst
LEFT JOIN x$ps_schema_table_statistics_io AS fsbi
ON pst.object_schema = fsbi.table_schema
AND pst.object_name = fsbi.table_name
ORDER BY pst.sum_timer_wait DESC;
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